34results about How to "No bleaching" patented technology

The invention provides a liquid crystal aligning agent, a liquid crystal alignment film and a liquid crystal display element. The liquid crystal aligning agent is a solution containing polyamide acid or derivatives thereof obtained by reacting tetracarboxylic dianhydride with diamine and a solvent, and the solvent contains at least one of compounds represented by the following formula (A). By employing the liquid crystal aligning agent, viscosity chages are not liable to generate at the room temperature, when being coated, the liquid crystal aligning agent is not sunken, when be produced, the liquid crystal aligning agent is not whitened. In addition, the orientation stability of liquid crystal molecules of a liquid crystal alignment film formed by the liquid crystal aligning agent is good. Furthermore, the residual image features of a liquid crystal display element provided with the liquid crystal alignment film are excellent.

The invention provides preservative paper for grape and a production method thereof. The preservative paper comprises preservative, base materials and an adhesive; the preservative and the base material are adhered through a hot melt adhesive; the preservative paper can be in a form that two agents are clamped among three base materials or one agent is clamped between two base materials. The production method of the preservative paper comprises the following steps: heating to melt the preservative and the hot melt adhesive through a rubber pump; uniformly mixing; conveying to scraper guns (9, 10); uniformly coating the mixture on base materials (1, 5); thermally pressing the medium base materials (3) and (1, 5) through a heat-seal roller (13); coiling through a coiling roller (14) into the preservative paper in the form that two layers of agents are clamped among three layers of base materials. The production method has the characteristics that a thermoplastic hot melt adhesive which is low in softening temperature and fast to solidify is utilized, and the preservative is molten by heating, so that the shortage of decomposing the preservative through water used as a solvent is avoided, and moreover, the production excludes drying, and as a result, the preservative paper is high in quality, and the production efficiency is increased.

The invention provides a bar code magnetic bead liquid chip detection kit for a thalassemia gene. The detection kit comprises a PCR reagent for amplifying the thalassemia gene and a hybridization reagent for detecting the thalassemia gene; the hybridization reagent comprises a liquid chip; the liquid chip comprises a bar code magnetic bead coupled with a specificity hybridization probe, a blank bar code magnetic bead, a dissociative hybridization positive inverted-sequence probe and a hybridization buffer solution. The detection kit is simple to operate, quick in reaction, high in flux, and digitized.

The invention discloses a hard antibacterial pharmaceutical PVC (polyvinyl chloride) sheet and a production method thereof. The hard antibacterial pharmaceutical PVC sheet comprises, by weight, 800-1200 parts of polyvinyl chloride resin, 20-50 parts of plasticizer, 10-30 parts of stabilizer, 20-40 parts of antibacterial agent, 100-300 parts of glass fibers, 5-15 parts of inorganic nanofiller, 1-5 parts of pigment and 10-20 parts of antibacterial agent stabilizer. The hard antibacterial pharmaceutical PVC sheet and the production method thereof have the advantages that by the aid of the added antibacterial agent, a dustbin can achieve good antibacterial effect to inhibit bacterium growth, so that public health can be protected, and harm of bacteria on the dustbin to human bodies can be reduced; meanwhile, since the antibacterial agent is poor in stability during modification, in a process that the antibacterial agent is added, the antibacterial agent stabilizer also needs to be added to improve stability of the antibacterial agent during modification.

A bottle sterilization method that sequentially performs: a step in which disinfectant is caused to adhere to a resin preform (1) and microbes attached to the preform are sterilized, by gasifying the disinfectant and spraying this gas (G) from a nozzle (6) towards the traveling preform; a step in which hot air (P) is blown on to the preform, the disinfectant adhered to the preform is activated, the microbes attached to the preform are sterilized, and the disinfectant adhered to the preform is removed from the preform; a step in which the preform is heated to a blow molding temperature; and a step in which the preform is blow-molded into a bottle (2) inside a blow molding die. As a result, disinfectant is not brought inside a blow molding machine.

The present invention relates to an acrylic adhesive composition, and more particularly, to an acrylic adhesive composition comprising a room temperature eutectic salt prepared by mixing a metal salt represented by the formula (1), composed of an anion having a perfluoroalkane group, which is a conjugate base of a super acid, and an alkali metal cation with a compound having an amide group represented by the formula (2), which is used to increase the degree of dissociation of the metal salt. The acrylic adhesive composition of the present invention has superior endurance reliability, antistaticity and adhesive force without whitening under high temperature and humidity.

The invention discloses PVC plate die forming equipment, and belongs to the technical field of PVC plate production equipment. The PVC plate die forming equipment comprises a workbench. Supports are arranged at the bottom end of the workbench, vertical beams are arranged at the top end of the workbench in a left-and-right symmetry manner, and a cross beam is arranged at the top ends of the vertical beams. During use, an upper die and a lower die are pressed to be sealed through a push rod, molten raw materials are injected into an inner cavity of the upper die and the lower die, the molten rawmaterials in the die cavity are rapidly cool-formed by injecting cooling liquid, after the molten raw materials are formed, vibratory wall separating mechanisms are started, a forming plate is separated from the inner wall of the die cavity, and therefore material ejecting is facilitated; and a vibratory material ejecting mechanism is started, an impacting plate rotary disc impacts on ejector rods, and the top ends of the ejector rods are separated from the bottom wall of the lower die and the forming plate. According to the device, through the arranged vibratory wall separating mechanisms and the arranged vibratory material ejecting mechanism, the problems such as whitening and breaking cannot be caused in the material ejecting process, and the percent of pass of finished products is effectively protected.

Provided is a vinyl chloride-based film for food packaging, which has good film appearance, packaging adequacy (flexibility) and low dissolvability (safety) at the same time. A film for food packaging, which is obtained by blending (A) a vinyl chloride resin with (B) a modified epoxidized vegetable oil having a multimer content ratio of 5-50% by mass, (C) an aliphatic dibasic acid ester compound with 10 or less carbon atoms, which has a weight average molecular weight of 200-1,000 and (D) a polyester compound having a weight average molecular weight of 3,000-10,000. The blending amount of the mixture of the components (B) and (C) relative to 100 parts by mass of the component (A) is 30-50 parts by mass; the ratio of the component (B) in the mixture of the components (B) and (C) is 30-70% by mass; and the blending amount of the component (D) relative to 100 parts by mass of the component (A) is 5-15 parts by mass.

A feed horn structure in which a feed horn and a horn cap can be combined without generating whitening, crack and the like, a manufacturing method thereof, a converter having that feed horn structure, and a satellite communication receiving antenna can be obtained. The feed horn structure of a satellite communication receiving converter includes a cylindrical feed horn (5) receiving a radio wave from an antenna portion and guiding the radio wave, and a horn cap (6) fixed to the feed horn so as to surround one end of the feed horn at antenna side. The feed horn and the horn cap are integrated by integral molding.

The invention provides a prepolymerization preparation method of a polymer matrix solid dye laser medium, relating to a preparation method of a solid dye laser medium. The preparation method solves the problems of the existing preparation method of the solid dye laser medium that the preparation period is long, the preparation process has the phenomena of layering, whitening or imploding, and the optical property of the obtained solid dye laser medium is bad. The method comprises the following steps of: refining MMA; stirring the MMA and laser dye in a mixing way to obtain laser dye solution; prepolymerizing the laser dye solution in high-temperature water batch; performing body polymerization to the prepolymerized laser dye; and annealing and mechanically machining to obtain the polymer matrix solid dye laser medium. The method firstly prepolymerizes the MMA monomer, thereby shortening induction period of polymerization, reducing volume contraction when polymerizing, shortening preparation period, and avoiding the problems of layering, whitening and imploding during preparing. The laser output slope efficiency of the solid dye medium reaches 48.57%-64.09% and fluorescence band width thereof is 44nm-46nm.

The present invention provides a toothbrush that has a flat-plate implanted head section in which warpage, resin whitening and cracks are prevented, ensures sufficient implanted bristle strength, andis easy to handle in the mouth. This toothbrush (1) is provided with a head section (10) having a plurality of bristle implanting holes (13) on the bristle implanted surface (12), and bundles of a plurality of bristles are folded into two parts and implanted in the bristle implanting holes (13) using flat plates (15). The thickness of the head section (10) is 2.0-4.0 mm, the bristle implanting hole density of the bristle implanting holes (13) is 25 holes / cm<2> or more, and the toothbrush satisfies the relationship: 0.37 mm <= (X - d) / 2 <= 0.55 mm, wherein X is the inner diameter of the bristleimplanting holes, d is the thickness of the flat plates, and X is 0.9-1.3 mm.

A feed horn structure in which a feed horn and a horn cap can be combined without generating whitening, crack and the like, a manufacturing method thereof, a converter having that feed horn structure, and a satellite communication receiving antenna can be obtained. The feed horn structure of a satellite communication receiving converter includes a cylindrical feed horn (5) receiving a radio wave from an antenna portion and guiding the radio wave, and a horn cap (6) fixed to the feed horn so as to surround one end of the feed horn at antenna side. The feed horn and the horn cap are integrated by integral molding.

The invention relates to the technical field of garment accessory production, and particularly relates to a method for removing a laser mark of a urea-formaldehyde resin button. The method for removing the laser mark of the urea-formaldehyde resin button comprises the steps of A) polishing the urea-formaldehyde resin button after laser treatment; and B) soaking the urea-formaldehyde resin button obtained in the step A) in post-treatment liquid for a period of time, taking out the urea-formaldehyde resin button, and cleaning the urea-formaldehyde resin button to obtain a laser mark removed urea-formaldehyde resin button, wherein the post-treatment liquid comprises the following components in parts by weight: 100 parts of water; 1-15 parts of trisodium phosphate, 0.5-1 part of a surfactant,and 1-10 parts of sodium silicate. According to the removing method, LOGO on the surface of the button is not whitened, and characters are consistent with the bottom color of the button. Moreover, theurea button with the colorless LOGO can be manufactured without using a LOGO mold, the effect and the performance of the manufactured product meet the colorless requirement of a customer for the LOGO, the production cost is effectively reduced, and the production period is shortened.

The invention relates to an isocaprylic acid-3-alkoxy-2-hydroxypropyl ester film-forming auxiliary agent and a preparation method thereof. The structural expression of thefilm-forming auxiliary agent is shown in the specification, and R1 represents any one of a substituted or unsubstituted C3-C5 alkyl group, a substituted or unsubstituted C3-C5 alkenyl group and a substituted or unsubstituted C3-C5 alkynyl group. When 4 wt% of the prepared film-forming auxiliary agent is added into an emulsion with the glass transition temperature of 46 DEG C, the minimum film-forming temperature is 13-15 DEG C, a continuous and transparent coating film can be formed, excellent film-forming property is shown, and the film-forming auxiliary agent is superior to a traditional film-forming auxiliary agent. The prepared film-forming auxiliary agent has the advantages of being good in compatibility with latex, low in film forming temperature, easy to absorb by latex particles, not prone to volatilization, safe, environmentally friendly and the like, and the market application prospect is wide.

The invention discloses an amine curing agent. The amine curing agent is characterized in that the amine curing agent is the condensation of a m-xylylenediamine monomer: a formula shown in the specification. A preparation process of the amine curing agent comprises the following raw materials: m-xylylenediamine and a catalyst with a mass ratio of 100:3, wherein a structural formula of m-xylylenediamine is shown in the specification, the molecular weight of m-xylylenediamine is 136, and an amine value of m-xylylenediamine is 500-600; and the catalyst is an aluminum-nickel alloy. The preparation process comprises the following steps: I, putting m-xylylenediamine and the catalyst into a three-mouth flask, heating by using an infrared lamp to ensure that the temperature is increased to 180+ / -5 DEG C, and preserving heat; II, continuously reacting, and absorbing ammonia gas which is produced in a reaction process by using a sulfuric acid solution; III, picking a sample, measuring the viscosity of the sample, and ending the reaction when the viscosity reaches 600-900CP; and IV, removing the catalyst by virtue of filtration. After being modified, the amine curing agent disclosed by the invention cannot be frozen, cannot have a whitening phenomenon, and is stable in reaction; and the preparation process disclosed by the invention is high in production efficiency, simple in required raw materials and concise in production process.

The invention discloses a manufacturing method of an anti-wearing floor of a prefabricated bathroom. The method includes the steps that the whole bathroom floor is cleaned up and dried in the air, and wax needs to be removed if the floor is waxy; a layer of UV light photocuring shadowless glue is coated on the floor evenly, and the thickness of the glue is 0.03-0.07 mm; a PVC anti-wearing surface film covers the UV light photocuring shadowless glue, extrusion is conducted until bubbles do not exist in the middle of the film so that the surface film is attached flatly; and an ultraviolet light photocuring light is used for illuminating the floor for 10-15 seconds so that the UV light photocuring shadowless glue can be solidified, and a finished product is obtained. All of the materials used in the method are colorless and transparent, and the color clarity does not reduce compared with the impression of an original surface. The anti-wearing property of the floor is tested through a GB / T18102-2007 test method, and completely meets the anti-wearing property of the business level; the floor is soaked for 24 hours in 84 disinfectant liquid, wherein the concentration of the sodium chlorate content is 620 mg / L, and no color fading and whitening phenomena happen on the surface; and by adopting the manufacturing method, the PVC anti-wearing layer can be suitable for different floors, the anti-wearing floor is suitable for industrialized batch production, and easy to be popularized in the market.

The invention belongs to an emulsion film-forming technology, and particularly relates to a film-forming aid and a preparation method thereof. The structural expression formula of the film-forming aidis shown in the specification, and R1 and R2 independently represent any one of a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group and a substituted and unsubstituted C1-C20 alkoxy group. Excellent film-forming property can be realized only by adding 4wt% of the film-forming aid prepared by the invention into the emulsion, the film-forming temperature is about 14 DEG C, a transparent continuous coating can be formed and the whitening phenomenon is avoided, and the paint has good compatibility, has a boiling point of about 270 DEG C, does not cause migration of organic compounds to the surface, is not easy to volatilize, has low VOC emission, is safe and environment-friendly, and has awide market prospect.

The invention provides a medical adhesive made from a medical polymer material and a preparation method of the medical adhesive. The adhesive consists of polyacrylate, tragacanth, polymethacrylate, squalane, benzoyl peroxide, glycerin rosin resin, dimethyl sebacate, hydroquinone, p-benzenemethanesulfonic acid, dioctyl phthalate, tertiary calcium phosphate and sodium alginate. The preparation method comprises the following steps: firstly, mixing the polyacrylate, the tragacanth, the polymethacrylate and the squalane, then adding the benzoyl peroxide and the glycerin rosin resin, and stirring so as to obtain a mixture I; then, mixing the dimethyl sebacate, the hydroquinone, the p-benzenemethanesulfonic acid, the dioctyl phthalate, the tertiary calcium phosphate and the sodium alginate so as to obtain a mixture II; and mixing the mixture I and the mixture II, heating, preserving heat, and cooling to room temperature, so that the medical adhesive is obtained. The medical adhesive disclosed by the invention is moderate in curing speed, long in duration of keeping stable and high in bonding strength.

The invention belongs to the technical field of preparation of methyl tin mercaptide, and particularly relates to a preparation method of methyl tin mercaptide, which comprises the following steps: S1, planing tin bricks with better quality into tin sheets, and putting the tin sheets into a reactor; s2, metal tin and a first catalyst are put into a reaction kettle, then chloromethane is introduced for halogenation, then a redistribution agent is added for a tinning reaction, distillation is performed, fractions with the gas temperature ranging from 150 DEG C to 230 DEG C are received, and then pure water is used for absorption to obtain a methyl tin chloride aqueous solution; the methyl vinyl chloride comprises dimethyl tin dichloride and methyl tin trichloride; and S3, adding the obtained methyl tin chloride aqueous solution into isooctyl thioglycolate, adding a second catalyst, carrying out a stirring reaction at a temperature of 5-15 DEG C for 0.2-0.4 h, adding an alkali liquor, carrying out a continuous stirring reaction until the pH value of the reaction system reaches 7-9, heating to 60-70 DEG C, carrying out a reaction for 1-1.5 h, standing, cooling, and layering.

The composition of medical adhesive includes (by weight portion) 940-970 portions of butyl cyanoacrylate, 30-60 portions of dimethyl sebacate, 0.1-0.5 portions of p-benzenediol and 0.1-0.8 portion of compound stabilizing agent, in which the described butyl cyanoacrylate is n-butyl alpha-cyanoacrylate, and the described compound stabilizing agent is made from toluene-p-sulfonic acid and dioctyl (0-) phthalate according to 90-100:0-10 weight portion. Its solidifying speed is moderate, adhesive strength is high, it is applicable to various wounds and incision of operation instead of suture needle and silk suture.